MC74HCT125ADTR2G

Overview

The MC74HCT125ADTR2G is a quad 3-state non-inverting buffer manufactured by onsemi in the HCT logic series. It operates within a DC supply voltage range of 4.5 V to 5.5 V and supports an operating free-air temperature from -55 °C to +125 °C. The device features four separate active-low output enables, allowing independent control of each channel. At 5.0 V, maximum propagation delay is 18 ns, with output enable delays up to 24 ns. It provides high noise immunity and low input current characteristics typical of CMOS devices.

Feature Summary

• Provides four independent non-inverting buffers with individual active-low output enables for precise bus-oriented control.
• Features inputs compatible with standard TTL outputs, facilitating direct interfacing with legacy digital systems.
• Delivers high noise immunity and robust drive capability suitable for memory address drivers and clock distribution.

Applications

• Memory address drivers
• Clock drivers
• Bus-oriented systems

Procurement Notes

Verify that the specific part number matches the required HCT logic family and TSSOP-14 package configuration. Confirm the presence of the 'G' suffix indicates a lead-free and RoHS compliant package. Ensure the ordering suffix corresponds to the tape and reel shipping format intended for automated assembly processes.

Selection Notes

Select this component when TTL-compatible inputs are required alongside CMOS performance levels. The HCT series ensures compatibility with standard TTL outputs without additional pull-up resistors. Consider the active-low enable polarity and the specific propagation delay requirements at 5.0 V operation before finalizing the design.

Part Context

This device belongs to the MC74HC125A/MC74HCT125A family of high-performance silicon-gate CMOS buffers. It shares identical pinouts with LS125 equivalents, ensuring mechanical interchangeability while offering superior electrical characteristics. The product line includes variants with active-high enables and different packaging options.

Replacement Considerations

MC74HC125ADTR2G